Presentation 2004/2/12
Optimum selection of dielectric constant for a dual-polarized patch antenna with low cross polarization
Kengo NISHIMOTO, Toru FUKASAWA, Masataka Ohtsuka, Shuji Urasaki,
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Abstract(in English) In this paper, the dependences of cross polarization on substrate dielectric constant are derived for a dual-polarized square patch antenna, and a novel design method is proposed to decrease cross polarization. The proposed one is to select the optimum dielectric constant. This method is based on the fact that the slope of the graph of dielectric constant versus cross polarization becomes reverse when the feed point is changed, and is effective for the planes tilted from the E-plane or H-plane. Also, considering effective dielectric constant, the above characteristics are validated both by the FDTD simulations and by experiments for a dual-polarized square patch antenna with a parasitic element. Moreover, in case of a patch antenna with a parasitic element, it is shown that the use of the optimum selection of dielectric constant, together with the use of the feed perturbation, is effective.
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Keyword(in English) dual polarization / patch antennas / low cross polarization / dielectric constant / parasitic elements
Paper # A・P2003-273
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Committee AP
Conference Date 2004/2/12(1days)
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Registration To Antennas and Propagation (A・P)
Language ENG
Title (in Japanese) (See Japanese page)
Sub Title (in Japanese) (See Japanese page)
Title (in English) Optimum selection of dielectric constant for a dual-polarized patch antenna with low cross polarization
Sub Title (in English)
Keyword(1) dual polarization
Keyword(2) patch antennas
Keyword(3) low cross polarization
Keyword(4) dielectric constant
Keyword(5) parasitic elements
1st Author's Name Kengo NISHIMOTO
1st Author's Affiliation Mitsubishi Electric Corporation()
2nd Author's Name Toru FUKASAWA
2nd Author's Affiliation Mitsubishi Electric Corporation
3rd Author's Name Masataka Ohtsuka
3rd Author's Affiliation Mitsubishi Electric Corporation
4th Author's Name Shuji Urasaki
4th Author's Affiliation Hiroshima Institute of Technology
Date 2004/2/12
Paper # A・P2003-273
Volume (vol) vol.103
Number (no) 655
Page pp.pp.-
#Pages 6
Date of Issue